/* 导航 */
.btn{
    opacity: 0.6;
    cursor: pointer;
    user-select: none;
}
.btn:hover{
    opacity: 1;
}
.nav {
    width: 100%;
    height: 66px;
    position: fixed;
    top: 0;
    left: 0;
    background-color: black;
    opacity: 0.8;
    font-size: 20px;
    display: block;
    z-index: 10;
}
.nav-main{
    height: 100%;
    width: 100%;
    font-size: 18px;
    display: flex;
    flex-direction: row;
    justify-content: center;
}
  
.nav1 {
    width: 30%;
    height: 100%;
    background: url(/imgs/second-main/原神.png) center center / cover no-repeat;
    background-size: auto;
    margin-right: 30px;
}
  
.nav2 {
    height: 100%;
    width: 40%;
    display: flex;
    flex-direction: row;
    color: #ccc;
}

.nav2 a:hover{
    text-shadow: 0 0 10px #69e0ff, 0 0 20px #69e0ff, 0 0 40px #69e0ff;
    color: #fff;
}
  
.aa{
    display: block;
    height: 100%;
    width: 150px;
    text-decoration: none;
    font-size: 18px;
    color: #fff;
    line-height: 75px;
}
  
.nav3 {
    height: 100%;
    width: 30%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.nav3-aa,.btn{
    font-size: 18px;
}

.nav3 a,span {
    text-decoration: none;
    color: #fff;
}
  
.nav3 img {
    margin: 0 20px;
    height: 33px;
    width: 33px;
}
  